import java.util.concurrent.TimeUnit;

class HoldLockThread implements Runnable{
private String lockA;
private String lockB;

    public HoldLockThread(String lockA, String lockB) {
        this.lockA = lockA;
        this.lockB = lockB;
    }

    @Override
    public void run() {
        synchronized (lockA){
            System.out.println(Thread.currentThread().getName()+"\t自己持有"+lockA+"尝试获得:"+lockB);
        try {
            TimeUnit.SECONDS.sleep(2);
        }catch (InterruptedException e){
            e.printStackTrace();
        }
        synchronized (lockB){
            System.out.println(Thread.currentThread().getName()+"\t自己持有"+lockB+"尝试获得:"+lockA);
        }
        }
    }
}
public class DeadLockDemo {
    public static void main(String[] args) {
        String lockA = "lockA";
        String lockB = "lockB";
        new Thread(new HoldLockThread(lockA,lockB),"ThreadAAA").start();
        new Thread(new HoldLockThread(lockB,lockA),"ThreadBBB").start();
/**
 *  linux  ps -ef | grep xxx        ls -l
 *  windows 下的java运行程序，有类似ps的查看进程命令，但目前只需要查看java
 *  jps = java ps                   jps -l
 */
    }
}